check engine TOYOTA COROLLA 2023 Workshop Manual

3827-2. Steps to take in an emergency
Use the mechanical key
(P.110) in order to perform the
following operations:
1 Locks all the doors
2 Unlocks all the doors
Turning the key unlocks the driver’s
door. Turning the key again unlocks
the other doors.
■Key linked functions
1 Closes the windows and moon
roof
*1 (turn and hold)*2
2Opens the windows and moon
roof
*1 (turn and hold)*2
*1
: If equipped
*2: This setting mu st be customized
at your Toyota dealer.
1 Ensure that the shift lever is
in P and depress the brake
pedal.
2 Touch the electronic key to
the engine switch.
When the electronic key is
detected, a buzzer sounds and the
engine switch will turn to ON.
When the smart key system is
deactivated in customization set-
ting, the engine switch will turn to
ACC.
3Firmly depress the brake
pedal and check that is
shown on the multi-informa-
tion display.
Locking and unlocking
the doorsWARNING
■When using the mechanical
key and operating the power
windows or moon roof (if
equipped)
Operate the power window or
moon roof after checking to make
sure that there is no possibility of
any passenger having any of their
body parts caught in the window
or moon roof.
Also, do not allo w children to
operate the mechanical key. It is
possible for children and other
passengers to get caught in the
power window or moon roof.
Starting the engine

3887-2. Steps to take in an emergency
able.
6Start the engine and turn the
air conditioning system on to
check that the radiator cool-
ing fan operates and to check
for coolant leaks from the
radiator or hoses.
The fan operates when the air con-
ditioning system is turned on imme-
diately after a cold start. Confirm
that the fan is op erating by check-
ing the fan sound and air flow. If it is
difficult to check these, turn the air
conditioning system on and off
repeatedly. (The fan may not oper-
ate in freezing temperatures.)
7 If the fan is not operating:
Stop the engine immediately
and contact your Toyota
dealer.
If the fan is operating: Have
the vehicle inspected at the
nearest Toyota dealer.
WARNING
■When inspecting under the
hood of your vehicle
Observe the following precau-
tions. Failure to do so may result
in serious injury such as burns.
●If steam is seen coming from
under the hood, do not open the
hood until the steam has sub-
sided. The engine compart-
ment may be very hot.
●Keep hands and clothing (espe-
cially a tie, a sca rf or a muffler)
away from the fan and belts.
Failure to do so may cause the
hands or clothing to be caught,
resulting in serious injury.
●Do not loosen the coolant reser-
voir cap while the engine and
radiator are hot.
High temperature steam or
coolant could spray out.
NOTICE
■When adding engine coolant
Add coolant slowly after the
engine has cooled down suffi-
ciently. Adding cool coolant to a
hot engine too quickly can cause
damage to the engine.
■To prevent damage to the
cooling system
Observe the following precau-
tions:
●Avoid contaminating the coolant
with foreign matter (such as
sand or dust etc.).
●Do not use any coolant additive.

3948-1. Specifications
■Oil capacity (Drain and refill
[Reference
*])
*: The engine oil capacity is a refer-ence quantity to be used when
changing the engine oil. Warm up
and turn off the engine, wait more
than 5 minutes, and check the oil
level on the dipstick.
■Engine oil selection
“Toyota Genuine Motor Oil” is
used in your Toyota vehicle. Use
Toyota approved “Toyota Genu-
ine Motor Oil” or equivalent to
satisfy the following grade and
viscosity.
Oil grade: ILSAC GF-6B multi-
grade engine oil
Recommended viscosity: SAE
0W-16 Outside temperature
SAE 0W-16 is the best choice
for good fuel economy and good
starting in cold weather.
If SAE 0W-16 is not available,
SAE 0W-20 oil may be used.
However, it must be replaced
with SAE 0W-16 at the next oil
change.
Oil viscosity (0W-16 is explained
here as an example):
• The 0W in 0W-16 indicates the characteristic of the oil
which allows cold startability.
Oils with a lower value before
the W allow for easier starting
of the engine in cold weather.
• The 16 in 0W-16 indicates the viscosity characteristic of the
oil when the oil is at high tem-
perature. An oil with a higher
viscosity (one with a higher
value) may be better suited if
Octane Rating87 (Research Octane Number 91) or
higher
Fuel tank capacity
(Reference)
Vehicles without 18-inch tires
12.4 gal. (47.0 L, 10.3 Imp. gal.)
Vehicles with 18-inch tires
13.2 gal. (50.0 L, 11.0 Imp. gal.)
Lubrication system
With filter4.9 qt. (4.6 L, 4.0 Imp.
qt.)
Without filter4.5 qt. (4.3 L, 3.8 Imp.
qt.)

436What to do if... (Troubleshooting)
1-1.What to do if... (Troubleshooting)What to do if... (Troubleshooting)
If you lose your keys or
mechanical keys, new genu-
ine keys or mechanical keys
can be made by your Toyota
dealer. ( P.381)
 If you lose your keys or elec-
tronic keys, the risk of vehicle
theft increases significantly.
Contact your Toyota dealer
immediately. ( P.381)
 Is the key battery weak or
depleted? ( P.333)
 Vehicles with a smart key sys-
tem: Is the engine switch in
ON?
When locking the doors, turn the
engine switch off. ( P.157)
 Vehicles with a smart key sys-
tem: Is the electronic key left
inside the vehicle?
When locking the doors, make sure
that you have the electronic key on
your person.
 The function may not operate
properly due to the condition
of the radio wave. ( P.109,
121)
 Is the child-protector lock set?
The rear door cannot be opened
from inside the vehicle when the
lock is set. Open the rear door from
outside and then unlock the
child-protector lock. ( P. 1 1 6 )
 Is the shift lever in P?
( P.154)
 Is the steering wheel
unlocked? ( P.154)
 Is the battery discharged?
( P.383)
 Did you press the engine
switch while firmly depress-
ing the brake pedal?
( P.155)
If you have a problem,
check the following before
contacting your Toyota
dealer.
The doors cannot be
locked, unlocked, opened
or closed
You lose your keys
The doors cannot be
locked or unlocked
The rear door cannot be
opened
If you think something is
wrong
The engine does not start
(vehicles without a smart
key system)
The engine does not start
( v e h i c l e s w i t h a s m a r t k e y
system)

438What to do if... (Troubleshooting)
Unlock the doors.
 Turn the engine switch to
ACC or ON, or start the
engine. (The alarm will be
deactivated or stopped after a
few seconds.)
 Is the electronic key left inside
the vehicle?
Check the message on the
multi-information display. ( P.366)
 When a warning light turns on
or a warning message is dis-
played, refer to P.356, 366.
 Stop the vehicle in a safe
place and replace the flat tire
with the spare tire. ( P.370)
 Try the procedure for when
the vehicle becomes stuck in
mud, dirt, or snow. ( P.389)
A warning buzzer sounds
when leaving the vehicle
( v e h i c l e s w i t h a s m a r t k e y
system)
A warning light turns on
or a warning message is
displayed
When a problem has
occurred
If you have a flat tire
The vehicle becomes
stuck

442Alphabetical Index
If your vehicle has to be stopped in an emergency................. 348
Ignition switch (engine switch) ................................... 154, 155
Overheating.......................... 387
Tachometer ............................ 86
Engine coolant Capacity ............................... 395
Checking .............................. 306
Preparing and c hecking before
winter.................................. 253
Engine coolant temperature gauge................................. 86, 89
Engine immobilizer system ..... 77
Engine oil Capacity ............................... 394
Checking .............................. 304
Preparing and c hecking before
winter.................................. 253
Warning light ........................ 357
Engine switch ................. 154, 155 Auto power off function ........ 159
Changing the engine switch modes ................................ 158
If your vehicle has to be stopped in an emergency................. 348
Enhanced VSC ........................ 249
EPS (Electric Power Steering) ............................................... 249Warning light ........................ 358
Event data recorder (EDR)......... 8
F
Flat tire Tire pressure warning system........................................... 313
Vehicles with a spare tire ..... 370
Floor mats ................................. 24
Fluid Brake .................................... 396
Continuously variable transmis-sion..................................... 396 Washer .................................310
Front passenger occupant clas- sification system ....................41
Front seats Adjustment ...........................125
Cleaning ...............................291
Correct driving posture ...........25
Head restraints .....................128
Seat heaters ....... ..................269
Front side marker lights Light switch...........................173
Replacing light bulbs ............342
Wattage ................................398
Front turn signal lights Replacing light bulbs ............341
Turn signal lever ...................167
Wattage ................................398
Front turn signal/parking lights Replacing light bulbs ............341
Fuel Capacity ...............................393
Fuel gauge .......................86, 89
Fuel pump shut off system ...355
Information ......... ..................399
Refueling ..............................180
Type......................................393
Warning light.........................359
Fuel consumption Average fuel economy ......93, 98
Current fuel consumption .93, 98
Fuel economy .....................93, 98
Fuel filler door Refueling ..............................180
Fuel gauge...........................86, 89
Fuel pump shut off system ....355
Fuses .......................................336
G
Gauges ................................86, 89
Glove box ................................274
Glove box light........................274

448Alphabetical Index
Tail lightsLight switch .......................... 173
Replacing light bulbs ............ 341
Theft deterrent system Alarm ...................................... 78
Engine immobilizer system .... 77
Tire inflation pre ssure............ 328
Maintenance data................. 397
Warning light ........................ 360
Tire information ...................... 401 Glossary ............................... 405
Size ...................................... 403
Tire identification number ..... 403
Uniform Tire Quality Grading 404
Tire pressure warning system Function ............................... 313
Installing tire pressure warning valves and transmitters ...... 315
Registering ID codes ............ 322
Registration of the position of each wheel ......................... 316
Setting the tire pressure ....... 318
Warning light ........................ 360
Tires Chains .................................. 254
Checking .............................. 311
If you have a flat tire ............. 370
Inflation pressure.................. 328
Information ........................... 401
Replacing ............................. 370
Rotating tires ........................ 313
Size ...................................... 397
Snow tires ............................ 253
Spare tire.............................. 370
Tire pressure warning system........................................... 313
Warning light ........................ 360
Tools ........................................ 371
Top tether strap ........................ 68
Total load capacity ................. 392
To w i n g Dinghy towing....................... 153 Emergency towing ................351
Towing eyelet........................353
Trailer towing ......
..................152
Toyota Safety Sense AHB (Automatic High Beam) 175
Cruise control .......................227
Dynamic radar cruise control 219
Emergency Driving Stop System...........................................230
LDA (Lane Departure Alert) ..206
LTA (Lane Tracing Assist) .....201
PCS (Pre-Collisio n System) .190
RSA (Road Sign Assist) ........217
Toyota Safety Sense 3.0[Toyota Safety Sense 3.0]PDA (Proactive driving assist) [PDA (Proactive driving assist)]........................................... 211
TRAC (Traction Control) ........249
Traction Control (TRAC) ........249
Trailer towing ..........................152
Transmission Continuously variable transmis-sion .............................160, 162
Driving mode select switch ...247
If th e s hif t le ver ca n no t b e s hif te d from P .........................161, 164
M mode ................................165
Paddle shift switches ....164, 165
Trip meters ..........................87, 90
Trunk ........................................ 117 Internal trunk rele ase lever ... 119
Smart key system ................. 118
Trunk light ............................. 119
Trunk opener ........................ 118
Wireless remote control........ 118
Trunk light ............................... 119 Wattage ................................398
Turn signal lights Replacing light bulbs ............341
Turn signal lever ...................167
Wattage ................................398

449Alphabetical Index
U
USB charging port.................. 277
V
Vanity lights ............................ 284Wattage ................................ 398
Vanity mirrors ......................... 284
Vehicle data recording ............... 6
Vehicle identifi cation number392
Vehicle information display ... 95, 100
Vehicle Stability Control (VSC) ............................................... 248
VSC (Vehicle Stability Control) ............................................... 248
W
Warning buzzers ABS ...................................... 358
Airbags ................................. 357
Approach warning ................ 226
Brake hold ............................ 363
Brake Override System ........ 358
Brake system ....................... 356
Charging system .................. 357
Downshifting......................... 166
Drive-Start Control ............... 358
Electric power steering ......... 358
Engine .................................. 357
High coolant temperature ..... 356
Key reminder ........................ 155
LDA (Lane Departure Alert) 206, 361
Low engine oil pressure ....... 357
LTA (Lane Tracing Assist) ... 201, 361
Open door .................... 113, 116
PDA (Proactive Driving Assist) ........................................... 361
Seat belt ....................... 359, 360 Warning lights .........................356
ABS ......................................358
Brake hold operated indicator...........................................363
Brake Override System ........358
Brake system ........................356
Charging system ..................357
Cruise control indicator.........362
Drive-Start Control ................358
Driving assist information indica- tor .......................................362
Dynamic radar cruise control indicator ..............................361
Electric power steering .........358
High coolant temperature .....356
LDA indicator ........................361
Low engine oil pressure .......357
Low fuel level........................359
LTA indicator .........................361
Malfunction indica tor lamp ....357
Parking brake indicator.........363
PDA indicator........................361
Pre-collision syst em .............361
Seat belt reminder light 359, 360
Slip indicator .........................362
SRS ......................................357
Tire pressure ...... ..................360
Warning messages .................366
Washer Checking ..............................310
Preparing and checking before winter ..................................253
Switch ...................................178
Washing and waxing ..............288
Weight Cargo capacity .....................152
Load limits ............................152
Wheels .....................................330 Replacing .............................330
Size ......................................397
Window lock switch ...............136